SIMPLY A BEAUTIFUL DESIGN!!! IT IS A 15 x 3.5mm NATURAL GREEN TOURMALINE AND A 2.2mm NATURAL CLEAN DIAMOND. THIS IS OPEN IN THE MIDDLE SO ANY JEWELER CAN SIZE IT EASILY A LITTLE MORE OR LESS THE SETTING IS 1 1/8" LONG SO IT WILL BE A GREAT SIZE ON THE FINGER. IT IS FULLY HALLMARKED 18K AND AS ALWAYS TESTED BY MY LOCAL JEWELER. WEIGHT IS 5 GRAMS